Do seasons affect the sunset

Answer 1

Yes, they do, because during the winter and spring the days get longer (the Sun rises earlier and sets later), and in summer and fall the days get shorter (the Sun rises later and sets earlier). The amount of the effect depends on your latitude; at the equator, the days and nights are always pretty close to 12 hours each, while at the Arctic and Antarctic Circles, the length of day goes from zero (at the winter solstice) to 24 hours (at the summer solstice).

There's a minor tweak that needs to be applied if you're looking for real precision; the Earth follows an elliptical path around the Sun, and its speed varies. Look up "analemma of time" for details about that. This can be important if you're building a sundial.

Answer 2

Yes, the position of the sun at sunset changes throughout the year due to the tilt of the Earth's axis. In the summer, the sun sets further to the north, while in the winter, it sets further to the south. This difference in the sunset position is more noticeable the further away you are from the equator.